Nav screen doesn't light nor does screen on Instrument cluster
 

Hey guys, a couple days ago on my 2013 G37x, when I started up the car, the nav screen doesn't light up but the radio and AC controls still work and on the instrument cluster the info screen between the speedometer and tachometer is also blank. It also doesn't show that the turn signals are on but they still work. Took it to the dealership for diagnosis. Could it be bad fuse(s)? If not, what caused this issue?